In April 2006, they released their first mini-album, Soukou Humority, which caught mainstream attention and the fans of baroque.
Soon after in September 2006, the band released their first major-label single, "Ritori", followed by their second "Hoshi no Yoru" in January 2007.
Later in February 2007, kannivalism finally debuted their first full-length album, Nu Age., which included many popular songs from the previous releases of 2006-07.
A live concert to commemorate their return is set for December 26, 2009 at Zepp Tokyo.
Random House will be publishing an autobiographical work by vocalist ryo in English, describing his experience with depression.